Difference between revisions of "Drop Duplicate Rows"
Line 4: | Line 4: | ||
http://www.international-presence.com/wikidocs/images/remove_duplicates_illustration.png | http://www.international-presence.com/wikidocs/images/remove_duplicates_illustration.png | ||
+ | |||
+ | {{DataTableNodes}} |
Revision as of 10:35, 23 June 2010
The Drop Duplicate Rows Node performs the equivalent to a "Select DISTINCT" operation on the current Data Table. Rows that are considered to be duplicates of other rows are removed. A duplicate row is one that contains identical values as another row.
Please see the example below, of a Data Table before and after executing a Drop Duplicate Rows Node (rows which will be deleted are marked with a red cross).
http://www.international-presence.com/wikidocs/images/remove_duplicates_illustration.png
Data Filter | Require Columns | Append Data Column | Multiple Column Appender
Drop Column | Drop Row(s) | Calculate Column Aggregate | Dataset Splitter | Merge Data
Create Data Table | Clear Data Table | Sort Data Table | Drop Duplicate Rows | Store Data Table | Retrieve Data Table
Task Elements > Data Table Nodes > Drop Duplicate Rows